Hi,
Thank you for sharing your suggestion regarding receiving notifications when the email queue is empty. There is potential value in implementing a periodic email to provide updates. However, it is also important to consider the settings for sending emails and the calculation of time required for sending them. That way you have an indication when all emails will have been sent.
However, please note that complications may arise when multiple emails are being sent simultaneously, especially when utilizing automations based on timing (such as birthday emails or automatic campaigns) or user actions (such as sending a mail when an ecommerce order status has been changed). This can lead to an overwhelming number of notifications each time the queue is empty.